EP 1114206 A1 20010711 - CYANIDE-FREE AQUEOUS ALKALINE BATH USED FOR THE GALVANIC APPLICATION OF ZINC OR ZINC-ALLOY COATINGS
Title (en)
CYANIDE-FREE AQUEOUS ALKALINE BATH USED FOR THE GALVANIC APPLICATION OF ZINC OR ZINC-ALLOY COATINGS
Title (de)
WÄSSRIGES ALKALISCHES CYANIDFREIES BAD ZUR GALVANISCHEN ABSCHEIDUNG VON ZINK- ODER ZINKLEGIERUNGSÜBERZÜGEN
Title (fr)
BAIN ALCALIN AQUEUX EXEMPT DE CYANURE S'UTILISANT POUR LE DEPOT PAR GALVANISATION DE REVETEMENTS EN ZINC OU EN ALLIAGE DE ZINC
Publication
Application
Priority
- DE 19840019 A 19980902
- EP 9905318 W 19990726
Abstract (en)
[origin: US6652728B1] An aqueous alkaline cyanide-free bath for the galvanic deposition of zinc or zinc alloy coatings on substrate surfaces is described, which contains in addition to a source of zinc ions and optionally a source of further metal ions, also hydroxide ions and a polymer of the general formula A that is soluble in the bathas well as optionally conventional additives. The bath may furthermore contain a quaternary derivative of a pyridine-3-carboxylic acid of the formula B and/or a quaternary derivative of a pyridine-3-carboxylic acid of the formula CA process for the galvanic deposition of zinc coatings and zinc alloy coatings using the aforedescribed bath is also described.By using the baths according to the invention it is possible to produce coatings that exhibit a uniform layer thickness combined with a high gloss, and which do not exhibit any tendency to exfoliate.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C25D 3/22 (2013.01 - EP US); C25D 3/565 (2013.01 - EP US)
Citation (search report)
See references of WO 0014305A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6652728 B1 20031125; AT E233329 T1 20030315; CA 2342219 A1 20000316; CA 2342219 C 20080923; DE 19840019 C1 20000316; DE 59904390 D1 20030403; EP 1114206 A1 20010711; EP 1114206 B1 20030226; ES 2193728 T3 20031101; JP 2002524662 A 20020806; JP 4263363 B2 20090513; PT 1114206 E 20030731; WO 0014305 A1 20000316; WO 0014305 A9 20000629; WO 0014305 A9 20000824
DOCDB simple family (application)
US 78624201 A 20010625; AT 99936607 T 19990726; CA 2342219 A 19990726; DE 19840019 A 19980902; DE 59904390 T 19990726; EP 9905318 W 19990726; EP 99936607 A 19990726; ES 99936607 T 19990726; JP 2000569041 A 19990726; PT 99936607 T 19990726